MIC812

The MIC811 and MIC812 are inexpensive microprocessor supervisory circuits that monitor power supplies in microprocessor based systems.

The function of this device is to assert a reset if either the power supply drops below a designated reset threshold level or /MR is forced low. Several different reset threshold levels are available to accommodate 3V, 3.3V or 5V powered systems.

The MIC811 has an active low /RESET output, while the MIC812 offers an active high RESET output. The reset output is guaranteed to remain asserted for a minimum of 140ms after VCC has risen above the designed reset threshold level. Having a push-pull output stage, the MIC811/812 does not require a pull-up resistor at the output. The MIC811/812 comes in a 4-pin SOT-143 package.

If a microprocessor voltage supervisor with an open-drain output stage is needed, see MIC6315.

Features
  • Precision voltage monitor for 3V, 3.3V or 5V power supplies
  • /RESET remains valid with VCC as low as 1V
  • 5µA typical supply current
  • 140ms minimum reset pulse width available
  • Manual reset input
  • Available in 4-pin SOT-143 package
Parameter
Parameter Name Value Value
Manual Reset Yes Yes
Typical Reset Pulse Width (ms) 140 140
Reset Type Active-High Push-Pull Active-High Push-Pull
Typical Supply Current (uA) 5 5
Nominal Reset Voltage (V) 2.63, 2.93, 3.08, 4.00, 4.38, 4.63 2.63, 2.93, 3.08, 4.00, 4.38, 4.63
Product Type Single Voltage Monitor Single Voltage Monitor
Documents
MIC811/812 Data SheetData Sheets11/09/2015207KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC812LUY-TR4SOT-143-40C to +85CT/R**********
MIC812MUY-TR4SOT-143-40C to +85CT/R**********
MIC812TUY-TR4SOT-143-40C to +85CT/R0.290.240.220.180.17
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC812LUY-TR0.0110000.0360004SOT-143-NiPdAue4
MIC812SUY-TR0.0110000.0360004SOT-143-NiPdAue4
MIC812TUY-TR0.0110000.0360004SOT-143-NiPdAue4
MIC812MUY-TR0.0110000.0360004SOT-143-NiPdAue4
MIC812JUY-TR0.0110000.0360004SOT-143-NiPdAue4
MIC812RUY-TR0.0110000.0360004SOT-143-NiPdAue4
MIC811/812 Data Sheet MIC812